object.js

var person = {
  name : 'Sarah',
  country : 'US',
  age : 35,
  treehouseStudent : true,
  skills : ['JavaScript', 'HTML', 'CSS']
};

function print(message) {
  var div = document.getElementById('output');
  div.innerHTML = message;
}

var message = "<p> Hello. My name is " + person.name + "</p>";
message += "<p>I live in the " + person.country + "</p>";
person.name = "Rainbow Dash";
message += '<p>But, I wish my name was ' + person.name + '</p>';
person.age += 1;
message += '<p> My age is now ' + person.age + '</p>';
message += '<p>I have ' + person.skills.length + ' skills : ';
message += person.skills.join(', ') +'</p>'; // mettre des espaces entre les éléments du tableau
print(message);


for (var prop in person) {
  console.log(prop,': ' + person[prop]);
}